Indicating device



March 26, 1929. f T, BQOTH A 1,106,519

, INDICATING DEVICE T11-l 4 I '/VC* l l 1 my.

v l flea/are Baa/f dit ntl' Panta malga. l1,706,519

` v UNITED-STATES-'.,PATENT fori-"ica,l

'rnnononn BOOTH, on monnndlomoynssmnon 'ro TOLEDO .sona COMPANY, or

roanne, OHIO, OQBPOBATION Or naw JERSEY. s

INDIOATING nnvron. l animati@ fue@ october 18,1926. serial-nahmen.

,This invention relates toI indicating V(lement of my .invention and wherein lsimilar vices, and particularly to indicatorsA for reference numerals designate similar parts weighing scales, and itis'espeoially adapted throughout theA several views. v 55 I' for use. on scales havingindicators of. the In the drawings'z-f so-called cylinder type, although 'it is to be Figurel'is-an elevational .view of the inunderstood that its applicationA to other dieator housing of'a weighing scale o'f the types of indicators is within the scope of'cylinder'type showing my invention incormy invention. Y pora'ted therein;' o0 Y Indicating devices'as applied to automatic F lgure II is a vertical sectional view computing weighing scales usually conslst'of through the housing shown in Figure I;

chartsw bearing series of computations and ,Figure III is an'enlarged' fragmentaryr indexes which indicate the particular comisometric view of certain parts of the scale putations tobe read.' Since the chart and mechanism; g A index in a device of this kind must be rela Figure IV is 'a diagrammatic side eleva` l5 tively movable "and the, index must at all tion showing the function of the device of times remain. out of contact with the chart, my invention; l v 'the index and chart are usually spaced a AFigure V is an enlarged fragmentary isosmall fraction of an inch apart andtheparmetric view of a portion of the device of my 70 ticular ligure or graduation on the chart invention.v a

with. which the index is in dapparent regis- Referrin to the drawings in detail, the tration depends upon the position of the housing `1 or the indicatorl mechanism may observer. One of the principal objects ofv be of any preferred type. Rotatably my invention is the provision of simple and mounted Within the housingis a vcylindrical 75' effective means to indicate to the observer chart 2 having a circumferential column of whether or not heis in proper reading posiweight indicating Iigures and graduations tion and thus enable him to avoid errors .in 3 land a plurality of columns of value gradureading the indication due to parallax. ations and computations y4. A portion of 'Another' objectl of the invention is to the .chart 2 bearing both Weight gradua- 80 provide a single index'which prevents liations and valuey computations is visible bility of error due to parallax and yet'casts through an openlng 5 in a lens frame 6 supno appreciable shadowon the chart. 1 vportedupon the chart housing 2. Mounted Another object is to provide an index 1n the fra-'me 6 is a reading lens 7, the exhaving reflecting surfaces which stand out terionsurface of which is a section of a cyl,` 85

prominently, thus inducing the operator to index', so that the apparent heightl of the move his eyes to proper reading position.-Y Y figures o'n the chart and the vertical distance Another obj ect ofthe invention is to-probetween the graduations are magnified when vide a combined reading and; sighting dethe chart is viewed through the lens. y vi zewsfhich` will visibly indicate -to'the obi Fixed to the housing 2 and parallel with 90 server When he is notl in correct reading the surface of the chart isa frame v9 bearing 40 position. A Y Y Y a Series of figures representing the price- Another object is'v the provisionY of a readper-pound numerals. This frame is proing and sighting device which is of rigid vided witha longitudinal opening through construction so that the errors due to lwhich a small portion of the chart is ren- 95 sagging of the index are eliminated. dered visible. F ixedly secured to the frame J Still another Objectis the provision of a 9 by means of brackets'lO and positioned-in combined reading andsighting device a horizontal plane passing through the axis which is easily manufactured and installed of the chart 2 is a thin strip of transparent -v and is not subject to deterioration. material 11 preferablyof glass which forms 100' I Other objects -and advantages will be apthe reading and' sightin device of my Iin parent from' the following description, in vention.` The edges of t e glass strip ma which 'reference is had to the accompanying be tinted or colored, as shown in Figure l drawings illustrating a preferred' embodi- .The strip is preferably made very thin vso v erator and the reflected .ligure or portions of figures appear inverted, thus indicating to the operator that he is not in correct reading position. No reflection is visible to the operator when his eye is in the plane of the glass index strip.

It is also apparent that a tension means is not required to support the reading and sighting index because the glass is inherently rigid and the slight deflection or sag caused by the Weight of the glass strip is so small as to be considered negligible in the practical operation of the device. The embodiment of my invention here.- in shown and described is tobe regarded as illustrative only, and it is to be understood that the invention is susceptible to variation, modification and change within the spirit p and scope of the subjoined claims.

Having described my invention, I claim:

1.v In a device of the class described, in combination, a chart, and a reading and sighting index co-operating with the chart, said reading and sighting index being of transparent material, having its lsurface in a plane intersecting the surface of the chart.

2. In a device of the class described, in combination, a chart, and av reading and sighting index co-operating with the chart,

lsaid reading and sighting index being of transparent material having a reiecting surface in a plane intersecting the surface of the chart.

3.111 a device of the class described, in combination, a chart and a' reading and sighting index co-operating therewith, said index comprising a strip of transparent material having tinted edges.

4. In a device of the class described, in combination, a chart, and a readin and sighting index comprising a strip o glass having its edge presented to the chart and adapted to co-operate therewith.

5. In a device of the class described, in combination, a chart, and a strip of transparent material, said strip having a colored edge presenting an opaque surface said opaque surface co-operating with said chart as a reading index.

.6. In a `device of the class described, in combinatiQn, a chart, and a strip of thin transparent material, said strip having tinted edges, said edges presenting opaque surf-aces Which form reading and, sighting indices adapted te co-operate with the chart.

7. In a device of the class described, `in combination, a chart, and a strip of thin glass, said strip of glass having colored edges, said edges presenting opaque surfacesl which form reading and sighting indices adapted to cro-operate with ythe chart.

8. In adevice of the class described, in combination, a movable chart, and a stationary reading index co-eperating therewith comprising a thin strip of transparent material withits edge presented to the chart.

9. In a device of the class described, inl

combination, a movable chart, and a stationary reading index co-operating therewith comprising a thin strip olf transparent material with its edge presented to said chart, said strip 'having reflectingsurfaces.'

10. In ak device of the class described, in combination, a movable chart, and a stationary reading index co-operating therewith comprising a thin strip of glass 'with its edge presented to said chart.

11. In a devicev of the class described, in combination, a chart, and a combined. reading and sighting index cri-operating with said chart, said index being of rigid transparent material having reflecting surfaces substantially perpendicular to the chart.

12.111 a device of the class described, in combination, a chart, and a combined reading and sighting index co-cperating therewith, said index comprising a strip of transparent material having a tinted edge.

13. In a device of the class described, in combination, a movable chart, and a thin strip ofglass having tinted edges, said edges forming reading and sighting indices adapted to co-operatewith the chart.

THEODORE BOOTH. 

